Finding the Fourth Proportional to 12,622.89, 17,436.22 and 9,430.63

Step by Step Solution

1. Step 1: Write the proportion equation
   12,622.89 : 17,436.22 = 9,430.63 : x
2. Step 2: Convert to fraction form
   12,622.89/17,436.22 = 9,430.63/x
3. Step 3: Cross multiply
   12,622.89x = 17,436.22 × 9,430.63
4. Step 4: Simplify right side
   12,622.89x = 164,434,596.85
5. Step 5: Solve for x
   x = 164,434,596.85/12,622.89
6. Step 6: Final answer
   x = 13,026.70